@ Dr. Heinz Lycklama
#3 - Homology in Vertebrate Limbs
n
Forelimbs of:
1.
Bat (flying)
2.
Porpoise (swimming)
3.
Horse (running)
4.
Human (grasping)
n
… showing bones
considered to be
homologous (similar
structure)
Different organisms may share similarities.
One kind of similarity is functional, e.g butterflies have wings for flying and so do bats. [analogy]
But the two animals are constructed very differently.
Another kind of similarity
is structural, but the structures are used for different functions. [homology]
